Hole-cleansing device



. I L 1,634,495 July 591927- E. G. GARTIN HOLE CLEANSING DEvIcE Filed March 24, 1924 .Qq 4 Ein@ VGC Patented duly 5, 1927.

muren STATES' yPA'lIEINT @li-FICIE..`

ELMER G. GARTIN, OF CLAREMONT, NEW'HAMPSIRE, ASSIGNOR TO SULLIVAN MACHINERY COMPANY, A CCRPORATION OI" MASSACHUSETTS.

HOLE--CLEANSING DEVICE.

Application filed March 24, 1924. Serial No. 701,369.

This invention relates to hole cleansingv devices for rock drills. y

It has for its object to provide improved hole cleansing means. A further object is to provide improved inea-ns for conducting hole cleansing fluid to a hollow drill steel. .A still further object is to provide improved hole cleansing fluid conducting means rwhich mechanism of the drilling device, a furtherl object being to provide improved means whereby when such a condition exists as just stated, the cleansing` fluid through said tube will be automatically shut off and the -operator thereby warned. It isfalso an object of my invention to provide suchl a mechanism so that the frontpart of the drilling motorV will not befloodeid with ,cleansing fluid when the conducting tube therefor does not assume its properk operative position.

In the accompanying drawings I have shown foi-,purposes .of illustration one form which my invention may assume in practice.

In these drawings,-.-

vFig. 1 is a longitudinal vertical sectionv .t have provided the following 'Herein' it will be noted that a threaded bore 18 is formed ina .rear portion of the head 2 through a rock drilling mechanism employ-V ing my improved hole cleansing means. l 2 is an enlarged longitudinal vertical section of the means for controllingl conducting fluidto the cleansing fluid conducting tubes. f y

I have shown my improved device for purnoses of illustration in connection with la usual drilling mechanism herein shown as"l of Vthe stoper typeV and which comprises a yusual percussive motor cylinderl having at cylinder 3 within which a usual feed piston` tis reciprocably mounted and actuated by pressure iiuid which is controlled byvi'any its rear end a head2 adapted to support; in' axial alinement with the cylinder` 1 a feedA rifle nut 9 being cari'ied by a chuck bushing 11 rotatably vmounted within a chuck housing 152 fixed upon the" forward portion of the head 8 and all of these membersbeing held in fixed relation by any suitable means such as side rods or lother means (not shown), The type of drilling` mechanism herein shown is also of the tappet type having a tappet 13 upon which the bar 7 strikes toractuate the hollow steel 111, said steel beingv heldin the memberk 11 by any suitable construction 15. i

In order to supply cleansing fluid to the hollow portion of the steel 14, I have shown a usual inner liquid cleansing tube 16 supported by and projecting forwardly'from the rear head 2 and terminating within the rear hollow portion of the steel 14. Mounted concentrically with the liquid cleansing tube 16 is a gaseous cleansing fluid tube 17 also supported by and projecting forwardly from the rear head2 but terminating within the tappet 13 somewhat short of its forward end. More specifically,the tubes 16 and 17 are mounted within the rear head 2 as by the construction shown in Fig.'2. In 'order to accomplishfthe object of providing an automatic cut-offfor the fluidflowing through `the inner tube 16 incase the same should yhit the end of the drill steel upon `insertion of the saine within the drilling mechanism, and also to allow the same to be yieldable upon the happening of such a" condition, I structure.

and terminates in an annular chamber 19 which.hascommunication with a gaseous fluid supply passage 20. yProjecting -forable structure whichsurr'ounds the tube 17r and against which is .pressed a bushing 23 .fixed upon the rear end ofthe tube 17 which,

as showninthe figure,` is flared outwardly atits outer end. In this constructiomuthis bushingQS is welded `-to the tube and thereafter ports 24"'are ,drilledy ,therethrough to allow communication `with. the chamber 19. yThe tubey 17 is also held in 'fixed position by a bushing 25, havinLe',v threaded engagement with ,the 'l 'e 18 hich presses lupon the' rear 1t will thus he seen the'tube 16.

fio

jectsi'earwardly into bore 26 through a rub- /ber packing 29 Jseated vagainst the rear portion ol!v the bushing 23, and' also adapted to support' the outwardly turned flangel 30 of lluid'to' the tube 16 1 have provided a passage 33 controlled by any suitable "means and terii'iifna'tiiig in an'annular groove 34' formed inthe rear'portion oli' `the head Q'wliifch :mates with" a 'corresponding groove A85 'lormedrin the torward 'portion 'oit' a cap 36 niunicating with the recess lis a port 37 terminating in a chainberi''termed around .the outer'e'nd of the bushing 25. rlhis chamber' can beffornied as'shown by tur'ningfdown l'desired be''formed .by any other suitable :'ineans. Leading from theychambei" 38 are aplurality o'l forwardly projecting passages vno'liqui a y y I A y y i j Lw arnevdf that v'the tube does not have proper ,operative relation tothe steel andthat either y'39'terminating*within .the bore of the bush- .in'g QSV'and which'allowsliow of fluid to the l steel ythijt'iugh openings l0 'formed `,in the transiierse Iportion ol:y the i'oiit" 'end of the sleevel'. i' 'l j'l'n; the operation of imy device, fluid, leither liquid' )or `airgA may' loesu'plplied toV their reyspective tubes v"as idesired'lby the use of vany' suitable" valvecontrolling mechanism. "iiholtild thetube 'loy accident or other- ",wise"engage'theri'ear endv ol Ythe steel instead` of projecting intothe' holloiif'.portion'thereof, said'fft'ube 'will' be -`thrurst-rearwardly lagainst ythe' .tension `"of the spring 32 and ysleeve 31`will overrun the ports' 39 thereby cutting oil liquid. tothe steel through the innertube. The. operator', upon'seeiiig I that is liowingtoJ thesteelywill vthereby a new "steel 'is :'reqiiired or further adjustment ofthe existi'ngone 'neededi Such a cpnstru'ctioinit 'will b'euseen, serves several purposes; Vone lo'lwliicli Vthat it prevents 'damageto the"inner tube 'tor it saidtube is i held Astatiiinar'y will broken oil upon i i i .',r i Venga-gement with the steel; whileganotlier is that the pperator' is warned thatfthe inner tube 'does not have proper relation to Vthe e The flange 3() has abutting eiigageiiient with` the forward .portion ot a "cy'lii Aintl'i'ey bushing 2.8.!and yieldalily heldin posil tion` b "y a Vspring 32' which yield'ingly holds 'the 'water tube ,17in its'lorwardf position. lnx order torsupply Yliquid orother cleansing `iii''itor adapted to e having `asso'ciated therewith .steel support- 'iiigii sans 'adapted to support a hollowv steel iii position" tor actuationzby saidl motor,A and vhole 'cleansing ineans"comprising a .cleanssteel and ,that `the steel .needs adjustment, while still-another is vthat it also prevents the lront end ol:I the motor from being ilgloodedwith the cleansing yl'luid.

flor purposes oi'iillustratioii and that the invention may be moditied and embodied in various other forms'without departingv'lrom its spirit or the scope of the appended claims.' I

V hat l claim as neri7 and desire to secure y br-Letters Patent is l. 'ln combination7 a percussive "drilling actuate a drill steelv and ing tliiifd'coiiduc'ting element having its forl\'vard' end normally in a position--wherein it .will liewithi'ntlie bore rof a hollow drill steel mounted in' said'supportingmeans in a'osition orfpercussive actuation, supporting means llor saidelement permitting the same lto yield 'rearwardly but normally 'yieldingly maintaining it in its` most advanced' `position,'and cleansing lfluid controlling 'means actuated upon yielding movel i y H n. .Y L ment-oli' said element. f' :the outer end ol the bushingy25 or could if 2'. YIn combination, percussive drilling iiiotr adaptedY to actuate 4a'drll steel and y having associated therewith'steel supporting means adapted Ato support av lio'llow'steeljin position tor actuation by said motor, and liolel cleansinO means com risino a' cleansinO' fl'luid conducting telement"lia-ving itsI forward lendynormally'""in a position wherein itrwill `lie withinthe boreof ahollow drill steel' mounted `in said supportingmeans in position for y,percussiveactuation, supporting I A l Y. i .i' i means tor said element permittinglthe saine to yield rearwardly but normallyl yieldingiy i maintaining itin itsin'ost advanced position, andzcleans'ing fluid 'controlling means actuated by yielding movement of said element.

In combination, a percussive drilling motor adapted to actuate a drill steel and positionffor actuationfby saidmotor,V and liquidsu'pply element having its'fiforward fend normally ina position' wherein it will lieA `wi'tlinilthe bore of a hollowdrill steel niountedin said supportingr means in. posiand'fclfean tluidc'ontrolling'means actu- -fat'ed upon'yielding` niovementof said eleinentf .riti

lhaving'ass'oe'izlited therewith steel supporting 'iiieaii'sadapted to supporta hollow'steel in .hole cleansing means comprising a cleansingY 'lid Il. In combination, a peroussivevdrilling motor adapted to actuate a drill steel and having associated therewith steel supporting means adapted to support a hollow steel in position tor actuation by said motor, and hole cleansing means comprising a cleansing fluid conducting element having its forward end normally in a position wherein it will lie within the bore of avhollow drilll steel mounted in said supporting means in position tor percussive actuatiom'supporting means for said element permitting the same to yield rearwardly but normally yieldingly maintaining it in its most advanced position, and cleansing fluid 'cont-rolling means carried by said element and actuated by movement thereof.

5. rlhe combination with a drilling mechanism having a motor and a hollow drill steel actuated thereby, of hole cleansing means cooperating with said steel comprisingv plurality otl cleansing fluid conducting elements, one of which is movable relative to the other and which is adapted to project into the hollow of the drill steel, means for yieldingly maintaining said movableelement normally in its most advanced position relative to said other fluid conducting element, and fluid controlling means actuated on relative movement between said elements.

6. The combination with a drilling mechanism having a cylinder and a hammer piston therein, a hollow steel, a yieldable cleansing fluid conducting tube extending through said piston and into said hollow portion of said steel at one end thereof, a bushing having a bore and tluid supply passages therein, Said tube at its other end terminating in said bore, and a sleeve adapted to shut olf flow through said passages and actuated by movement of said tube.

7. The combination with a drilling mechanism adapted to operate upon a drill steel and including a hammer element and a striking block for transmitting blows to a steel,

yoit hole cleansing mechanism including a tluid conducting tubeextending thro ugh the striking block and into position to enter a hollow steel and yiel-dable rearwardly on engagement by a steel, fluid supply means for said tube, and means for controlling said fluid supply actuated "upon predetermined relative movement between said tube and striking block.

8. The combination witha drilling mechanism having a steel, of hole cleansing mechanism including inner and outer relatively movable fluid conducting tubes, fluidsupply means therefor, andL means for controlling said AHuid supply actuated upon relative movement between said tubes.

In testimony whereof I atlx my signature.

ELMER Gr.' GARTIN. 

